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GET /api/1.1/patches/2230487/?format=api
{ "id": 2230487, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230487/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429190532.26538-12-mohamed@unpredictable.fr/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260429190532.26538-12-mohamed@unpredictable.fr>", "date": "2026-04-29T19:05:28", "name": "[v21,11/15] target/arm: hvf: pass through CNTHCTL_EL2 and MDCCINT_EL1", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c372af22d215f63aeb977260439648276eb33ba2", "submitter": { "id": 91318, "url": "http://patchwork.ozlabs.org/api/1.1/people/91318/?format=api", "name": "Mohamed Mediouni", "email": "mohamed@unpredictable.fr" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429190532.26538-12-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 502138, "url": "http://patchwork.ozlabs.org/api/1.1/series/502138/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502138", "date": "2026-04-29T19:05:29", "name": "HVF: Add support for platform vGIC and nested virtualisation", "version": 21, "mbox": "http://patchwork.ozlabs.org/series/502138/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230487/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230487/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=unpredictable.fr header.i=@unpredictable.fr\n header.a=rsa-sha256 header.s=sig1 header.b=HGz/A+xu;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Wed, 29 Apr 2026 15:06:13 -0400", "from outbound.ms.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-west-3a-60-percent-6 (Postfix) with ESMTPS id\n 8E8F618000E9; Wed, 29 Apr 2026 19:06:09 +0000 (UTC)", "from localhost.localdomain (unknown [17.57.154.37])\n by p00-icloudmta-asmtp-us-west-3a-60-percent-6 (Postfix) with ESMTPSA id\n A0B5918002DD; Wed, 29 Apr 2026 19:06:06 +0000 (UTC)" ], "X-ICL-Out-Info": "\n HUtFAUMHWwJACUgBTUQeDx5WFlZNRAJCTQFIHV8DWRxBAUkdXw9LVxQEFVwFVgZXFHkNXR1FDlYZWgxSD1sOHBZLWFUJCgZdGFgVVgl3HlwASx1XBFQfUxJVHR0LRUtAEwRJAE1fDl4fBBdGGVUERx5dVl4eGQJRHFYNV0NUBF9QSQxBUGxaAEcXSB1dGVlvUF0cDhhZG0AVXRFQGVYJXhUXHkFNWgJWTQVKA18BWwZCAEkKXQJYAF4LTgZeD0YDQhQVXAVWBlcUeQ1dHUUOVhlaDFIPWw4cFktGExlOG1dNWg1AGVgGbRRWFVIEWQ==", "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1777489571; x=1780081571;\n bh=iP9tdJ6jkY5u7kiEfu0n/jB1gTl+WbYwZraw8G3pTMI=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:x-icloud-hme;\n b=HGz/A+xuj8BYWKG5JK6HRdvjyGqvRSGZQU+O0djNiMjqiMoi/e8Vpm8jTNDLyVS7/CnYAa6V0xkTTjSs3hzSvWHi3iAVkTeulHU9j1pY9VognpE1AhBkzLWkMbZqXUJzE6KGyzMnbrx3uv0rmvqpHTBSYF5/uTfIKFGp3/clYfHF/w+2HLMYcD4DYednfeKTy3CpYo0vfBWmKlkbq/fwoEbTK5HgrqGSB+DW/5yxmB7XclKn60zRd6oMab31J6ej4sVx5J4PERudUxrCkfZu52atlPYgpVIr64OrgaT/qFZrp7uh6e3CYppaCaxFwBmPE2IUY4O4TGf8lraeekFASA==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "Phil Dennis-Jordan <phil@philjordan.eu>,\n Yanan Wang <wangyanan55@huawei.com>, Paolo Bonzini <pbonzini@redhat.com>,\n Roman Bolshakov <rbolshakov@ddn.com>,\n =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>,\n qemu-arm@nongnu.org, Zhao Liu <zhao1.liu@intel.com>,\n Alexander Graf <agraf@csgraf.de>, Eduardo Habkost <eduardo@habkost.net>,\n Marcel Apfelbaum <marcel.apfelbaum@gmail.com>,\n Peter Maydell <peter.maydell@linaro.org>,\n Mohamed Mediouni <mohamed@unpredictable.fr>", "Subject": "[PATCH v21 11/15] target/arm: hvf: pass through CNTHCTL_EL2 and\n MDCCINT_EL1", "Date": "Wed, 29 Apr 2026 21:05:28 +0200", "Message-ID": "<20260429190532.26538-12-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260429190532.26538-1-mohamed@unpredictable.fr>", "References": "<20260429190532.26538-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Type": "text/plain; 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helo=outbound.ms.icloud.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n SPF_HELO_PASS=-0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "HVF traps accesses to CNTHCTL_EL2. For nested guests, HVF traps accesses to MDCCINT_EL1.\nPass through those accesses to the Hypervisor.framework library.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\n\nReviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>\nTested-by: Philippe Mathieu-Daudé <philmd@linaro.org>\n---\n target/arm/hvf/hvf.c | 20 ++++++++++++++++++++\n 1 file changed, 20 insertions(+)", "diff": "diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c\nindex c40327ea2f..ceeb61fbc0 100644\n--- a/target/arm/hvf/hvf.c\n+++ b/target/arm/hvf/hvf.c\n@@ -296,6 +296,10 @@ void hvf_arm_init_debug(void)\n #define SYSREG_DBGWVR15_EL1 SYSREG(2, 0, 0, 15, 6)\n #define SYSREG_DBGWCR15_EL1 SYSREG(2, 0, 0, 15, 7)\n \n+/* EL2 registers */\n+#define SYSREG_CNTHCTL_EL2 SYSREG(3, 4, 14, 1, 0)\n+#define SYSREG_MDCCINT_EL1 SYSREG(2, 0, 0, 2, 0)\n+\n #define WFX_IS_WFE (1 << 0)\n \n #define TMR_CTL_ENABLE (1 << 0)\n@@ -1719,6 +1723,14 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint64_t *val)\n case SYSREG_OSDLR_EL1:\n /* Dummy register */\n return 0;\n+ case SYSREG_CNTHCTL_EL2:\n+ if (__builtin_available(macOS 15.0, *)) {\n+ assert_hvf_ok(hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTHCTL_EL2, val));\n+ }\n+ return 0;\n+ case SYSREG_MDCCINT_EL1:\n+ assert_hvf_ok(hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_MDCCINT_EL1, val));\n+ return 0;\n case SYSREG_ICC_AP0R0_EL1:\n case SYSREG_ICC_AP0R1_EL1:\n case SYSREG_ICC_AP0R2_EL1:\n@@ -2007,6 +2019,14 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t reg, uint64_t val)\n case SYSREG_OSDLR_EL1:\n /* Dummy register */\n return 0;\n+ case SYSREG_CNTHCTL_EL2:\n+ if (__builtin_available(macOS 15.0, *)) {\n+ assert_hvf_ok(hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTHCTL_EL2, val));\n+ }\n+ return 0;\n+ case SYSREG_MDCCINT_EL1:\n+ assert_hvf_ok(hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_MDCCINT_EL1, val));\n+ return 0;\n case SYSREG_LORC_EL1:\n /* Dummy register */\n return 0;\n", "prefixes": [ "v21", "11/15" ] }